异构网络中基于共享relay的干扰协调策略

Introducing Relay Nodes (RNs) to conventional cellular networks in 3GPP LTE-A, the interference coordination in cellular networks will be more complex. The resource allocation of cellular networks with RNs should be taken seriously. The following aspects should be considered in the process of resource allocation with RNs 1) Interference mitigation, 2) Performance improvement brought by Relay. This paper proposes an Inter-Cell Interference Coordination (ICIC) scheme based on Shared Relay (ISR), which is utilized in cellular networks with RNs. The proposed scheme can either mitigates inter-cell interference or enhance throughput of cell edge users (CEUs) through intra cell frequency reuse. Simulation results show that the throughput and blocking rate of CEUs in proposed scheme is better than that in existing scheme.